Fig. 1From: Forearm T-score as a predictor of cage subsidence in patients with degenerative lumbar spine disease following posterior single-segment lumbar interbody fusionThe left panel indicates the selection of the middle L1 vertebral body in the sagittal position of the CT image, and the right panel indicates the placement of the ROI in the mid-level axial position of the L1 vertebral body and the automatic calculation of the mean HU value within the ROI by the PACS systemBack to article page